Radiator



Patented May 8, 1923.

A 1,454,432 TENT Fries.

JOHN M. FEDDERSV, OF BUFFALO, NEW YORK, ASSIGNOR TO FEDDERS MANUFAC- TURING COMPANY, INC., OF BUFFALO, NEW YORK, A CORPORATION OF YORK.

RADIATOR.

Application tiled January 22, 1921. Serial No. 439,076.

To all whom it may concern I Be it known that I, JOHN M. FEDDnRs, a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Radiators, of which the following is a specification.

This invention relates to a Aradiator designed for cooling the water of explosion engines used to propel automobiles although the same may be used for other purposes and more particularly to a radiator in which the water tubes are made of strips of corrugated sheet metal and the radiation is increased by means of radiating strips of metal arranged between adjacent water tubes and forming air passages therewith.

It is the obj ect of this invention to provide a radiator 'of this character which has greater radiating lefficiency for the same amount of met-al and dimensions without any increase in cost of manufacture o r sacriiicing any features which are advantageous in a radiator.

In the accompanying drawings: Figure 1 is a fragmentary front elevation of a radiator embodying my invention. Figure 2 is a fragmentary vertical longitudinal section of the same. Figure 3 is an oblique section taken on line 3 3, Fig. 2. Figure 4 is a horizontal section taken on line 4 4, Fig. 1. Figures 5 and 6 are fragmentary perspective views of a wall strip and a spacing strip used in constructing a radiator con-y taining my improvements. Figure 7 is a. spacing strip of modified form constructed in accordance with my invention.

Similar characters of reference refer to like parts throughout the several yiews.

' 10 and 11 represent the'upper and lower water boxesor headers of 4the radiator which may be connected with the supply and return pipes of a gas engine in any suitable and -approved manner. Between these water boxes or headers is arranged a plurality of upright water tubes 12 which communicate at theirupper ends into the bottom of the upper box and at their lower ends into the top of the lower box. Two upright rows of horizontal air passages 13 arey arranged between adjacent water tubes and extend from the front to the rear oit'` the radiator, the passages, of these two rows being so arranged that the, 'same are staggered relatively to each other.

Each of the water tubes is constructed of two strips 14 of sheet metal which are arranged parallel and spaced apart to form two walls of the water tube or conduit through which vthe water flows from one box or header -to the other. These wall strips are provided at their opposite longitudinal edges with inward offsets 15 which are secured to each other by solder, thereby form- 1ng the closures at opposite edges of the water tube.

The walls of each water tube are corrugated and when the same are assembled the 1nner convex side of each corrugation of one wall strip is arranged opposite the concave side of a corrugation on the other wall strip` so that the water tube is of zig-zag form and causes the water in passing through the tube to take a tortuous course and thus increase the cooling effect of the same. A

Between adjacent water tubes is arranged a spacing strip 16 of metal which is corrugated and engaged at the summits of its corrugations with the outer summits 140,01 the wall .strips on opposite sides ofthe respective spac- 1ng strip, and thus forms with said walls the two staggered rows of air passages between adjacent water tubes. This spacing strip is interlocked with the opposing water tube walls by providing the summit of each corrugation of the spacin strip with a longitudinal groove 17 whichv terminates short of opposite edges of this strip and receives that part of an outer summit 140 of one of the corrugated walls between the offsets of the latter so that the wall stri and spacing strip are interlocked and he d both against vertical as well as horizontal displacement. These grooves are preferably formed by reversely bending the summit portions of the corrugations of the spacin stri as shown in Figs. 2 and 6. Ifdesired t is spacing strip may be additionally secured between adjacent .wall strips by so dering.

As the water lowsthrough the water tubes the heat in the same is radiated to air which flows through the air 'passage in contact with the walls of the tubes and in contact -with the spacing strips which engage with the walls.

In order to increase the radiation of the heat in the water to the air each of the spacing strips is provided with-a plurality of radiating wings or fins 18 which project from the spacing strip into the path of the air in the passages so that the air is coin-- .polled to engage these wings and absorb eat therefrom and thus increase the cool'- ing efficiency of the radiator accordingly. The wings are preferably of rectangular' form and stamped out of the sloping parts of the corrugated spacing strip so that one longitudinal edge of each wing remains integrally connected with the respective spacing strip while the other longitudinal edge and the transverse edge of the same are disconnected therefrom.Y The free ends of each of these wings may be of an); suitable form, the same being shown of V-shape in Figs. 3, 4 and 6 while in Fig. 7 the saine are represented at 19 as of `flat form. The wings of each sloping p art of a corrugated spacing strip are arranged in two rowslon opposite sides of the same, the wings being arranged vertically or` substantially so. and the wings in each row being arranged in the same plane. rllhe wings on one side of each slope of a corrugated spacing strip preferably project in one direction and the wings on the other side of the same in the opposite direction, and the wings on these two sides alternate with each other in a direction lengthwise of the corrugation of the spacing strip. By this means the wingson opposite sides of each slope of a spacing strip corrugation can he arranged quite close together and enable a large number of wings to be formed thereon for securing the maximum radiating effet-t without producing any perceptible weakening in the structure of the radiator.

It has been found by actual experience that a much greater radiating effect is obtained when theuwings or fins are formed integrally with the spacing strip as compared with wings or fins which are soldered or otherwise attached to the spacing strip. The present. construction is therefore not only advantageous in this respect but the special' form and arrangement of the wings permit of utilizing this advantage so as to obtain a greater radiating eliiciency for a given size of radiator and weight of sheet metal.

I claim as my invention:

1.,.A radiator comprising a plurality of water tubes and a plurality of air passages arranged between adjacent water tubes, each of said Vwater tubes having its walls constructed' of two corrugated strips of sheet metal which are spaced apart to form the water passage between them and are arranged parallel so that the inner convex side of each corrugation on one strip faces the inner concave side of a corrugation on the other strip, and a spacing strip of corrugated sheet metal arranged between said wall strips so that the outer summits of the wall strips engage with the summits of the corrugations ofthe spacing strip and forin with the latter said air passages, and the slopes of the corrugations of said radiating strip being provided with longitudinal rows of wings which are removed from the metal of said `strip and each wing being attached. at one of its longitudinal edges` to the respective spacing strip and projecting with its other longitudinal edge into the adjacent air passage, each of said wings being of V- forni at its free end.

A radiator comprising a plurality of water tubes and a plurality of air passages arranged between adjacent water tubes, each of said water tubes having its walls constructed of two corrugated strips of sheet metal which are spaced apart to form the water pa'ssage between them and are arranged parallel so that the inner convex side of each corrugation on one strip faces the inner concave side of a corrugation on the other strip, and a spacing strip of corrugated sheet metal arranged between said 'wall strips so that the outer summits of the wall strips engage with the summits of the corrugations of the spacing strip and form with the latter said air passages, and the slopes of the corrugations of said spacing strip being provided with longitudinal rows of wings which are removed from the metal of said strip and each wing being attached at one of its longitudinal edges to the respective spacing strip and projecting with its other longitudinal edge into the acent air passage, and the wings of each row projgcting alternately in opposite directions from the respective spacing strip.

A radiator comprising a plurality of water tubes and a plurality of air p assages arranged between adjacent water tubes, cach of said water tubes having its walls constructed of two corrugated strips of sheet metal which are spaced apart to form the water passage between them and are arranged parallel so that the inner convex side of each corrugation on one strip faces the inner'concave side of a corrugation on the other strip, and a spacing strip of corrugated sheet metal arranged between said wall strips so that the outer summits of the wall strips engage with the summits of the corrugations of the spacing Strip and form with the lattersaid air passages, and the slopes of 'the' corrugations of said spacing strip being provided with longitudinal rows of wings which are removed from the metal ofsaid strip and each wing being attached at one of its longitudinal edges to the respective spacing strip and projecting with its other longitudinal edge into the adjacent air passage, and the wings of each row projecting alternately Yin opposite directions from the respective spacing strip and from opposite sides of the same.

4. A radiator comprising a plurality of water tubes and a plurality of air passages arranged between adjacent water tubes, each of said water tubes hav-ing its walls constructed of two corrugated strips of' sheet metal which are spaced apart to form the water passage between them and are arranged parallel so that the inner convex side of each corrugation on one strip faces the inner concave side of a corrugation on the other strip, and a spacing strip of c orrugated sheet metal arranged between said wall strips so that the outer summits of the wall strips engage with the summits of the corrugatlons of thespacing strip and form with the latter said air passages, and the slopes of the corrugations of said spacing strip being provided with longitudinal rows of wings which are removed from the metal of said strip and each wing being attached at one of its longitudinal edges of the respective spacing strip and projecting with its other longitudinal edge into the adjacent JOHN M.. FEDDERS.- 

